Let's start with the average cost of electricity.
I took a weighted average 6h peak, 6h mid-peak, 12h off-peak and got an average cost of 8.1 cents/kWh.
Taking into account the weekends, this gives 7.557 cents/kWh.

The PS3 uses 0.115kW, so 115W*24h/day*7day/week=19.32 kW/week.

Multiplying the energy use by the cost/week gives $1.46/week.
Not that bad if you ask me.

0.115kWh x 24hrs x 7days = 19.32kWh per week
Average price per kWh = (10.8 + 9.2 + 6.2)/3 = 8.7333 cents per kWh (I know that my value is higher than the actual average since more weight is towards off peak, but this is worst case)

Weekly cost to fold = 19.32kWh x $0.087333 = $1.68 per week.

I believe that you only calculated for 7 hours of folding - $0.085 x 0.115Watts = $0.0097 per hour x 7 = $0.0679, not $6.79.

0.115kWh x 24hrs x 7days = 19.32kWh per week
Average price per kWh = (10.8 + 9.2 + 6.2)/3 = 8.7333 cents per kWh (I know that my value is higher than the actual average since more weight is towards off peak, but this is worst case)

Weekly cost to fold = 19.32kWh x $0.087333 = $1.68 per week.

I believe that you only calculated for 7 hours of folding - $0.085 x 0.115Watts = $0.0097 per hour x 7 = $0.0679, not $6.79.

Edit: Damn, ninja'd

Yup, that makes sense.

Since we are folding for the team, we should at least get beaver bobble heads each !. I've seen them for $5.50 each

Question, the CC team race is coming up May 5th...how long does it last ? If it's reasonable ( not sure on the details at all or what the race is ) I'll have my PC and another PS3 folding that day as well.